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To ALL WHOM 1T MAY coNonn'n:

JAeoB FEK'LBnnoFsT. Louis., MISSOURI.

LettersPatent iNo. 82,816, dated October 6, A1868.

IMPROVEMENT IN'llllAGHI'llE-S1v MOltTISING, SLOTTING, ANDDOVE-IAILI'NG'nV ttt-tlgetnle referrer tu in ttte'tttters mit acting mitf tige zum. I j

Be it known that I, JAG FELBlER, of'St. Louis, in the county of)St.Louis, and State of Missouri, have made certain new and usefulImprovements inYLMa'chines for Mortising, Slotting, and Dove-Tailing;and I 'do hereby declare that the following is a full andcleardescription thereof, A reference being had to the accompanying drawings,and to the letters of reference marked thereon.

This machine is especially adapted tcoperating the clotting-tool coveredby patent of William Zimmerman.

It consists of afra'me, Von which bearings are provided for two rotatingarbors, one of which carries the tool in its end, and has a eompoiihdmotion, which consists of a rotary motion about its axis, anda pendulousmotion of its tool-end, thel latter mot-ionbeing imparted to it by meansof an adjustable crank-wrist, attached to the other arbor, and aconnecting-rod. The pendulous motion of the said Atool-arbor is for thepurpose of giving the required length to the slot or mortise,`and thelength of the stroke may be adjusted to a great nicety by means of theadjustable wrist, which imparts the motion to it. The` line of motiongiven to the pendulous end ofthe arbor may be straight, either in ahorizontal, vertical, or diagonal plane, or it may be in a curved line,described from any desirable radius.

The article which is to be mortised, slotted, or dove-tailed,'is to besecuredto .an adjustable table, which is capable .of an adjustablevertical or lateral motion. The' clauip, by means of which thestuff'isto be secured t'o the said table, is to-be capable of securingthe stuif thereto, either in a horizontal plane, or at any angle ofinclination desired. The screws, by means of which the stuff is .securedto the table, have 'a compound right- Y and-left motion, so as tooperate expeditiously.

To enablethose skilled inthe art to make and use my improved machine, Iwill proceed to describe'its construction and operation. i

Figure 1 of the drawings is a front elevation of themachine.

Figure 2 is a planr Figure 3 is an end elevation. v l

Figure 4 'is a sectional elevation, showing the arrangement for changingthe direction of-the slot or mortise.

Figure 5 is affront elevation of-'table and clamp used for diagonalmortising. l

jFigure 6 is an end elevation of the table and clamp-.shown in g. 5. Y

The frame A, which supports the operativeparts of the machine, furnishesbearings in itsl top facefor the two rotating arbors B and@ The arborBcarries in its forward end the tool which c uts the mor-tise or slot.

Thistool is a peculiarv deviceofitself. -Itconsists of a grocvedcylinder, constructed in such a manneras to present serratedcutting-edges, that-cut the chips up .into very fine particles, thatmay4thenl be very easily removed from the 'mortise. The forward end of thetool is provided with cuttingedges,uthat enable-it toibore y directlyintothe piece to be mortised, and-then the cutting-edges, which areprovidedbn the sides' of the tool,

enable it tocut its wayla-terally into the wood in whateven directionmay be desirable. l

The arbor B shouldhave a very rapid motion about its axisand thetool-end of'it should also have a pendulous motion, either in a straightor curvedline, forv the purposeof giving theproper length, directiomandform to the mortise, as will be hereinafter. more fully explained. Thispendull'ou 'mption is4 imparted to the.

arbor B by means of the-crankc and pitman C7 attached to the arbor C'.-Thecanli c maybe regulated, by

means of vthe screw c', to any required length o sliding box D, whichcarries the tool-end of the arbor B. The arborB hasglobe-beari'ngslinboth of its bearingboxes, D and D1, and Vthis enablesit to Vrevolve freely on its axis at the same timefthatit has ap'endulousmotion. The box D is fitted to a sliding rail, d, whichformsthe top edge of the segmental plate D?, and this plate is secured bymeans of the screw-bolts d to the top edge or end o'f the pendulum-guideD3. This 'pendulum-guide consists of a vertical arm anda T-shaped head.l l y A. slot, cl2, in the vertical arm,` extends nearly'its entirelength, and permits 'the pivot-pin d3 to be moved up or down, asoccasion may require, to lengthen or contract the strokeof the saidpendulum-guide. A.l similar f stroke. The inner" end of ,thel pitman'Clis coupled to the vertical slot is provided in the post a, which is aportion of the'frame A, for the operationiand vertical adjustment of thepiu cl3. A collar in the centre of the said pin, and anut on the vba'cltend of it, afford the means of securing it rigidly to the post a at anyrequired-elevation, while the nut on the front end servesto keep thependu-lum in theproper place on the pin. There is a separate'ferruleforeach of the pieces a and D37 and the bolt or pin d passes through bothof them, which thus furnish bushings for it.

When the tool b is desired to travel in a straight line, in a horizontalplane, so as to eut astraight mortisc, the pin di is to be passedthrough thelg a2 on top of lthe frame A, as shown in fig. 3, and'into ahole made in the pendulum-guide D3 for its reception. This secures thesaid pendulum-guide in a fixed position, and allows the box D toslideback and forth on the rail d, as it is operated by the crank c andpitmau C', thus enabling the tool b to travel in a reciprocatinghorizontal motion, and thereby cutting a straight horizontal mortise orslot.

Should it be desirable to cut a diagonal mortise, the segmental p lateD2, which carries the rail d, may be adjusted to the pendulum,(nowbecomea fixed support,) at any required angle of inclination, bymeans of the adjusting-bolts dl, as is clearly indicated bydotted linesin fig. 4.

Should it be desirable to ganse the tool .Il to travel in a curved line,so as to out acurved mortise, as is frequently required in furniture orcabinet-work,'the Apin d* is to be removed-frgm the lug az, and insertedthrough holes prepared for it in the box D and plateDz, as is mostclearly shown at d5 in iig. 3. The box D then becomes securelyxed to thependulous guide :D2-D3, and as itis moved forward and backward by meansof the crank c, as clearly described, the tool b will describe an arc ofa circle, the radius of which will be equal to the distance between theaxes'of the arbor B and pin d3, and this distance may be increased ordiminished, as'eircumstances may require, by thevertical adjustment ofthe pin cl3, as has already been explained.

The 'stuif to bemortised is to'be placed on the.- table E, and thereclamped fast by either the clamp F or G, aswill be presently explained'.The table E rests on the bed-plate El, and this bed-plate in turn issustained by the face-plate EVwhich issecured'to the face ofthemachine-'frame A. The face-plate 'E2 is adjustable in a.

diagonal direction', by'means of the screw-bolts e, as shown by thedotted lines in fig, 1. The bed-plate Elie attached to the face-plate Eby means of dove-tailed ways placed between them and the cogged sectorel, which is provided with a leveror handle, e, and has its axleprovided with bearings in the said bed-plate, gears vinto i a'coggedrack, (notshowlh) on theV face of the plate E2, and affords a means ofraising or lowering the table E by simply raising or depressing thelever or handle e2. This arrangement may be useful when the width ofthemortise being cut .is to bel increased beyond the size of the toolcutting it.

A set-screw, e3, attached to `the frame A, below the said bed-plate'El,will be convenient'for adjusting and i regulating the verticalpositionof the table. The table E rests en the bed-plate El by means ofthe'intervening dove-tailed'waysle, and on theseways the said table hasan adjustable lateral feed-motion. This motion is imparted to it bymeans of the cogg'ed sector e5, which is provided with a lever orhandle,`e5. This sector, like the one marked e, has thebearings of itsaxle providedin the bed-plate El. It gears into a. cogged rack, the endof which is seen at el'in fig. 1, 'and which-is attached to the bottomofthe tabl-e E. By raising or lowering the outer end of the lever es,the sector el Vactuates the table E, which is advanced toward orretreated from the tool b in this manner, so as to cause it to feedinto'the stuff, in the desired manner, until the desireddepth of themortises is reached. l

The clamp F, by means of which the stui'l is to be Ysecured to the tableE, consists of tbe lmetallic framef d and the screw fl. This clamp is onlyr to be used when the mortise or slot is to be ont into the stuifin adirec-y tion parallel with one of its faces. The screw is operated by acrank on its upper lend, and it has a washer, f, on its lower end, intowhich washer screw-threads are cut for the reception of the smallthreads cut on the lower end of the screws, which are made at auop'posite angle from those threads of the screw which find theirbearings in the framef.- By means of Vthese compound threadsof the screwf1, a quick .motion isgiven theclamp, the same as the motion is given inmost letter-presses.

When diagonal mortising is required, the clamp G is to be used, and theclampl` is then to be removed. The arrangement ofthe clamp G is bestseen in figs. 5 and 6. It consists of a metallic stan'd,g, whichisbolted to the table E, and a diagonally adjustable clamp-frame, gl,which is`to be adjusted at any required angle of inclination, and thenfixed in position' bymeans of the screw-bolt g2, which passes throughboth it and the frame g. The clamp-screw g3 and its washer g are similarin every' respect to the above-described scrwf. i i i Having thusdescribed my invention, what I claim, is i i i The combination of thearbor B, pivoted 'by ball-and-socket bearing at D1, and guided byball-and-socket bearing in the sliding head D, with said head D, thesegmental plate D, pendulum D3, its slotdz, and the pivot-pin d3, whenoperating substantially as and for the. purpose set forth.. j

` JACOB EELBER.

Witnesses M, RANDOLPH, i Gno. W. .'HERBERT.

